红色16进制不加透明度为#FF0000，后面两位为透明度#FF000000
以下为16进制色值前两位的透明值，
0% (00)
1% (03) 2% (05) 3% (08) 4% (0A) 5% (0D)
6% (0F) 7% (12) 8% (14) 9% (17) 10% (1A)
11% (1C) 12% (1F) 13% (21) 14% (24) 15% (26)
16% (29) 17% (2B) 18% (2E) 19% (30) 20% (33)
21% (36) 22% (38) 23% (3B) 24% (3D) 25% (40)
26% (42) 27% (45) 28% (47) 29% (4A) 30% (4D)
31% (4F) 32% (52) 33% (54) 34% (57) 35% (59)
36% (5C) 37% (5E) 38% (61) 39% (63) 40% (66)
41% (69) 42% (6B) 43% (6E) 44% (70) 45% (73)
46% (75) 47% (78) 48% (7A) 49% (7D) 50% (80)
51% (82) 52% (85) 53% (87) 54% (8A) 55% (8C)
56% (8F) 57% (91) 58% (94) 59% (96) 60% (99)
61% (9C) 62% (9E) 63% (A1) 64% (A3) 65% (A6)
66% (A8) 67% (AB) 68% (AD) 69% (B0) 70% (B3)
71% (B5) 72% (B8) 73% (BA) 74% (BD) 75% (BF)
76% (C2) 77% (C4) 78% (C7) 79% (C9) 80% (CC)
81% (CF) 82% (D1) 83% (D4) 84% (D6) 85% (D9)
86% (DB) 87% (DE) 88% (E0) 89% (E3) 90% (E6)
91% (E8) 92% (EB) 93% (ED) 94% (F0) 95% (F2)
96% (F5) 97% (F7) 98% (FA) 99% (FC) 100%(FF)
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